package com.jing.ads.downloader;

/**
 * 
 * 包含下载全局使用常量�?
 * 
 * @since 1.6
 * @version 1.0.0 2010-11-19
 */
public interface Constants {
	
	/** Tag used for debugging/logging */
    public static final String TAG = "DownloadManager";
    
    /** Enable verbose logging */
    public static final boolean LOGV = false;
    
    /** Enable super-verbose logging */
    public static final boolean LOGVV = true && LOGV;
    
    /** The intent that gets sent when the service must wake up for a retry */
    public static final String ACTION_RETRY = "android.intent.action.DOWNLOAD_WAKEUP";
    
    /** the intent that gets sent when clicking a successful download */
    public static final String ACTION_OPEN = "android.intent.action.DOWNLOAD_OPEN";
    
    /** the intent that gets sent when clicking an incomplete/failed download  */
    public static final String ACTION_LIST = "android.intent.action.DOWNLOAD_LIST";
    
    /** the intent that gets sent when deleting the notification of a completed download */
    public static final String ACTION_HIDE = "android.intent.action.DOWNLOAD_HIDE";
    
    /** The column that is used for the downloads's ETag */
    public static final String ETAG = "etag";
    
    /** The column that is used to count retries */
    public static final String FAILED_CONNECTIONS = "numfailed";
    
    /** The column that used to be used for the HTTP method of the request */
    public static final String RETRY_AFTER___REDIRECT_COUNT = "method";
    
    /** The column that used to be used for the magic OTA update filename */
    public static final String OTA_UPDATE = "otaupdate";
    
    /** The column that used to be used to reject system filetypes */
    public static final String NO_SYSTEM_FILES = "no_system";
    
    /** The column that is used for the initiating app's UID */
    public static final String UID = "uid";
    
    /** A magic filename that is allowed to exist within the system cache */
    public static final String KNOWN_SPURIOUS_FILENAME = "lost+found";
    
    /** A magic filename that is allowed to exist within the system cache */
    public static final String RECOVERY_DIRECTORY = "recovery";
    
    /** The maximum number of rows in the database (FIFO) */
    public static final int MAX_DOWNLOADS = 1000;
    
    /** The default user agent used for downloads */
    public static final String DEFAULT_USER_AGENT = "AndroidDownloadManager";
    
    /** The buffer size used to stream the data */
    public static final int BUFFER_SIZE = 4096;
    
    /** The minimum amount of progress that has to be done before the progress bar gets updated */
    public static final int MIN_PROGRESS_STEP = 4096;
    
    /** The minimum amount of time that has to elapse before the progress bar gets updated, in ms */
    public static final long MIN_PROGRESS_TIME = 1500;
    
    /** Where we store downloaded files on the external storage */
    //public static final String DEFAULT_DL_SUBDIR = "/download";
    public static final String DEFAULT_DL_SUBDIR = "/JingADS";
    
    public static final String DEFAULT_LOG_SUBDIR = "log.txt";
    public static final String DEFAULT_SELF_SUBDIR = "self";
    
    /**
     * The number of times that the download manager will retry its network
     * operations when no progress is happening before it gives up.
     */
    public static final int MAX_RETRIES = 5;
    
    /**
     * The time between a failure and the first retry after an IOException.
     * Each subsequent retry grows exponentially, doubling each time.
     * The time is in seconds.
     */
    public static final int RETRY_FIRST_DELAY = 30;
    
    /**
     * The minimum amount of time that the download manager accepts for
     * a Retry-After response header with a parameter in delta-seconds.
     */
    public static final int MIN_RETRY_AFTER = 30; // 30s
    
    /**
     * The maximum amount of time that the download manager accepts for
     * a Retry-After response header with a parameter in delta-seconds.
     */
    public static final int MAX_RETRY_AFTER = 24 * 60 * 60; // 24h
    
    /**
     * The maximum number of redirects.
     */
    public static final int MAX_REDIRECTS = 5; // can't be more than 7.
    
    /** The default base name for downloaded files if we can't get one at the HTTP level */
    public static final String DEFAULT_DL_FILENAME = "downloadfile";
    
    /** The default extension for html files if we can't get one at the HTTP level */
    public static final String DEFAULT_DL_HTML_EXTENSION = ".html";

    /** The default extension for text files if we can't get one at the HTTP level */
    public static final String DEFAULT_DL_TEXT_EXTENSION = ".txt";

    /** The default extension for binary files if we can't get one at the HTTP level */
    public static final String DEFAULT_DL_BINARY_EXTENSION = ".bin";

    /**
     * When a number has to be appended to the filename, this string is used to separate the
     * base filename from the sequence number
     */
    public static final String FILENAME_SEQUENCE_SEPARATOR = "-";
	
}
